X server won't load

I'm very new to Linux, and this may be a dumb question? I'm having a problem with X server (it won't load), and its telling me that it cannot find the nvidia driver its looking for. So, I'm thinking what I need to do is from the command line -- download the nvidia driver, install it, and then reboot? Does anyone know how I can do this? -- Many thanks! --

Related bugs

Related FAQ:

You may try to change your driver to "vesa" for a while, so you can install nvidia with your windows manager. Edit your xorg.conf for that:
sudo nano /etc/X11/xorg.conf
and look for a Section "Device"-->Driver.

Another way (maybe more straightforward) is to reconfigure xserver all together:
sudo dpkg-reconfigure -phigh xserver-xorg

Please, make a copy of xorg.conf before applying any of this.
sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf.copy

I have this problem, and I know what I did. I had nvidia-glx-legacy on and running fine. Then I saw nvidia-glx-new and like an idiot without checking it out, I installed nvidia-glx-new and removed legacy. Now when I reboot and start I get the error, cannot start X Server GUI.
I saw the commands for uninstalling the nvidia-glx-new and installing legacy. But it didn;t work, it seems it couldn't connect.